The Wildlife Trust said many of the birds died from starvation because they couldn’t find enough food to survive during the storms.
Beyond the 60 seabirds found washed up in Wales, including razorbills and puffins, an additional 11,000 puffins are feared to have perished during the storms in France.
“They would normally sit on the sea and dive under to catch fish, but if the top few metres are churned up, they find it difficult to find food in this way,” warden Ed Stubbings told the BBC.
The trust warns that it has also recorded declines in breeding success in many bird colonies, which they believe to be linked to climate change.
Some researchers say the increased force and frequency of storms, such as those of recent weeks in northern Europe, are linked to changes in climate.
Photo: Wildlife Trust